I used a full sheet of Arches 300# watercolor paper measuring 22" x 30"
This view is right across the street from my home - I am so lucky to live here in sunny Sequim, WA!
I begin by transferring my drawing to a full sheet of 300# Arches paper. I thoroughly wet the paper on both sides, let it swell and then staple it to my backboard.
Painting sun struck trees before a red rock canyon wall was a fun challenge...if at first I don't succeed, get out the 4" house painting brush, brush off all the pastel and try, try again!
I'm getting ready to paint in Zion and need to ensure I pack just the right pastels, so I am painting from some 2014 reference photos.
I drew a simple line drawing indicating the big shapes.